641085 has 16 divisors (see below), whose sum is σ = 1040640. Its totient is φ = 336960.

The previous prime is 641083. The next prime is 641089. The reversal of 641085 is 580146.

641085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 641085 - 2¹ = 641083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 915 + ... + 1455.

It is an arithmetic number, because the mean of its divisors is an integer number (65040).

2⁶⁴¹⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

641085 is a deficient number, since it is larger than the sum of its proper divisors (399555).

641085 is a wasteful number, since it uses less digits than its factorization.

641085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 641085 is about 800.6778378349. The cubic root of 641085 is about 86.2260593079.

The spelling of 641085 in words is "six hundred forty-one thousand, eighty-five".